Umpire stand pipe diameter to match the notes you can retrofit base. For Round Pipes ● resin with hardware for mounting part number, type A to B – Type B – 2078, B 2079, B 3984, B 2055, B 2056, B 2057, B – 5999 * Please specify size B – 2256 a25 4 mm x for B – 2256b34 mm